↑ “Mali’s Farmers Discover a Weed’s Potential Power”. New York Times. Ngày 9 tháng 9-2007. Truy cập ngày 21 tháng 11 năm 2007. But now that a plant called jatropha is being hailed by scientists and policy makers as a potentially ideal source of biofuel, a plant that can grow in marginal soil or beside food crops, that does not require a lot of fertilizer and yields many times as much biofuel per acre planted as corn and many other potential biofuels. By planting a row of jatropha for every seven rows of regular crops, Mr. Banani could double his income on the field in the first year and lose none of his usual yield from his field. Kiểm tra giá trị ngày tháng trong: |date= (trợ giúp)
